I will also show that inequality began to rise sharply again since the 1970s and 1980s, albeit with significant variation between countries, again suggesting that institutional and political differences played a key role. I will also analyze, from both a historical and a theoretical point of view, the evolution of the relative importance of inherited wealth versus income from labor over the very long run. Many people believe that modern growth naturally favors labor over inheritance and competence over birth. What is the source of this widespread belief, and how sure can we be that it is
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